What is the basic unit of current flow?

What is the basic unit of current flow?

• A. The Volt
• B. The Watt
• C. The Ampere
• D. The Ohm

Answer: (C)

Current is the rate at which electric charges move through a conductor. The unit used to measure that flow is the ampere, abbreviated A. One ampere means one coulomb of charge passes a point every second. This makes the ampere the basic unit for current. The other options measure related things: the volt is electric potential difference (the push that moves charges), the watt is electrical power (how much work per second), and the ohm is resistance (how much a material resists current). They relate through P = V × I and V = I × R, but they do not measure current itself.

Current is the rate at which electric charges move through a conductor. The unit used to measure that flow is the ampere, abbreviated A. One ampere means one coulomb of charge passes a point every second. This makes the ampere the basic unit for current.

The other options measure related things: the volt is electric potential difference (the push that moves charges), the watt is electrical power (how much work per second), and the ohm is resistance (how much a material resists current). They relate through P = V × I and V = I × R, but they do not measure current itself.